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  • Mat.No. 1.7264, DIN 20CrMo5
  • Mat.No. 1.7264, DIN 20CrMo5

Mat.No. 1.7264, DIN 20CrMo5

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Specification, Chemical & Mechanical Performance

Designation by Standards

Brand Name Ravne No. Mat. No. DIN EN AISI
ECMO100 721 1.7264 20CrMo5 - -

 

Chemical Composition (in weight %)

C Si Mn Cr Mo Ni V W Others
0.21 0.25 1.05 1.25 0.25 - - - -

Description
Alloyed carbon steel.

 

Applications
Higher stressed components – gears, shafts, crankshafts, connecting rods, cam shafts, etc. 

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.80

Coefficient of Linear Thermal Expansion 10-6 oC-1

20-100oC 20-200oC 20-300oC 20-400oC 20-500oC
11.1 12.1 12.7 12.9 13.5

 

Soft Annealing

Heat to 680-700oC, cool slowly. This will produce a maximum Brinell hardness of 217.

Carburizing
Temperature: 880-950oC. Cooling from carburizing temperature: oil (water), air, thermal bath, cooling box.

 

Hardening
Core hardening temperature: 850-880oC. Case hardening temperature: 810-840oC. Quenching media: oil, (water), thermal bath.

Tempering
Tempering temperature: 170-210oC.

Hardenability Diagram

Forging
Hot forming temperature: 1050-850oC. 

Machinability
No data.

Forms manufactured: Please see the Dimensional Sales Program. 

Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.

 

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